Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
sympathetic nervous system | Yes | No | No | No |
autonomic nervous system | Yes | No | No | No |
sympathetic nervous system (noun) | autonomic nervous system (noun) |
---|---|
originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vessels | the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands |